224185491 has 12 divisors (see below), whose sum is σ = 323990368. Its totient is φ = 149379984.

The previous prime is 224185483. The next prime is 224185529. The reversal of 224185491 is 194581422.

It is not a de Polignac number, because 224185491 - 2³ = 224185483 is a prime.

It is a super-2 number, since 2×224185491² = 100518268749822162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224185391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16221 + ... + 26673.

Almost surely, 2^224185491 is an apocalyptic number.

224185491 is a deficient number, since it is larger than the sum of its proper divisors (99804877).

224185491 is a wasteful number, since it uses less digits than its factorization.

224185491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12842 (or 12839 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 224185491 is about 14972.8250841316. The cubic root of 224185491 is about 607.4853850063.

It can be divided in two parts, 224185 and 491, that added together give a square (224676 = 474²).

The spelling of 224185491 in words is "two hundred twenty-four million, one hundred eighty-five thousand, four hundred ninety-one".